The latest Biopellet Reactor by Reef Octopus specifically designed for to hang on the side of a sump or aquarium.

These Revolutionary Media Reactors have a fluidizing cone bottom design to help keep the Biopellet media in suspension and evenly disperse the water upwards, without restricting the flow through the unit. The convenient design allows for these reactors to hang on the side of a sump or aquarium.